BCM4356 datasheet(80/155 Pages) CYPRESS

80 / 155 page

Document Number: 002-15053 Rev. *D

Page 80 of 155

ADVANCE

CYW4356

154

BT_GPIO_3

I/O

Bluetooth general-purpose I/O

168

BT_GPIO_4

I/O

Bluetooth general-purpose I/O

153

BT_GPIO_5

I/O

Bluetooth general-purpose I/O

Miscellaneous

319

WL_REG_ON

Used by PMU to power up or power down the internal

CYW4356 regulators used by the WLAN section. Also, when

deasserted, this pin holds the WLAN section in reset. This

pin has an internal 200 kΩ pull-down resistor that is enabled

by default. It can be disabled through programming.

320

BT_REG_ON

Used by PMU to power up or power down the internal

CYW4356 regulators used by the Bluetooth/FM section.

Also, when deasserted, this pin holds the Bluetooth/FM

section in reset. This pin has an internal 200 kΩ pull-down

resistor that is enabled by default. It can be disabled through

programming.

176

BT_DEV_WAKE

I/O

Bluetooth DEV_WAKE

170

BT_HOST_WAKE

I/O

Bluetooth HOST_WAKE

12–29,

99–101,

31, 33, 35,

Do not connect these pins to anything. Leave them floating.

Integrated Voltage Regulators

340

SR_VDDBATA5V

Quiet VBAT

348

SR_VDDBATP5V

Power VBAT

336

SR_VLX

Cbuck switching regulator output. Refer to Table 44 for

details of the inductor and capacitor required on this output.

342

LDO_VDD1P5

LNLDO input

327

LDO_VDDBAT5V

LDO VBAT.

249

WRF_XTAL_VDD1P5

XTAL LDO input (1.35V)

254

WRF_XTAL_VDD1P2

XTAL LDO output (1.2V)

351

VOUT_LNLDO

Output of LNLDO

341

VOUT_CLDO

Output of core LDO

362

VOUT_BTLDO2P5

Output of BT LDO

346

VOUT_LDO3P3_B

Output of 3.3V LDO

324

VOUT_3P3

LDO 3.3V output

330

VOUT_3P3_SENSE

Voltage sense pin for LDO 3.3V output

Bluetooth Supplies

BT_PAVDD2P5

PWR

Bluetooth PA power supply

BT_LNAVDD1P2

PWR

Bluetooth LNA power supply

BT_IFVDD1P2

PWR

Bluetooth IF block power supply

BT_PLLVDD1P2

PWR

Bluetooth RF PLL power supply

BT_VCOVDD1P2

PWR

Bluetooth RF power supply

148, 149,

150,151

BT_VDDIO

PWR

Core supply

Table 22. WLCSP Signal Descriptions (Cont.)

Bump#

Signal Name

Type

Description

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